Permutation padlock



May 7, 1929. J. colRo 1,712,476

PERMUTATION PADLOCK Filed July 18, 1927 2 Sheets-Sheet l w'k \mw INVENTOR.

fizz-w g g By 0% 65am May 7, 1929. J. COIRO I 1,712,476

- PERMUTATION PADLOCK Filed July 18, 1927 2 Sheets-Sheet 2 By W ' ATTORIZZ ill Patented May 7, 19.29.. i

' UNITED. STATES JOSEPH COIRO, OF CHESTER, PENNSYLVANIA.

PERMUIATION PADLOCK.

Application filed July 18, 1927. Serial No. 206,624.

This invention relates to certain new and useful improvements in permutation padlocks, and the primary object of the invention is to provide a padlock of this kind which is simple and durable in construction and which can be manufactured at a low cost.

The invention consists in the novel form, combination and. arrangement of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like reference characters indicate corresponding parts throughout the several views,

Figure 1 is an end elevational view of a permutation padlock constructed in accordance with the present invention;

Figure 2 is a side elevational view thereof;

which is flange-d collars are mounted; and

Figure 10 is a plan view of the rod which is slldable 1n the sleeve of Figure 9.

Referrmg more in detail to the drawings the present padlock comprises a pair of head plates 5 and 6, the head plate 5 having a transverse opening in which is tightly threaded the reduced stem 7 of a rod 8, and the head plate 6 also having a transverse opening in which is riveted the reduced stem 9 provided upon one end of a sleeve 10 within which the rod 8 is slidably fitted. The movement of the rod 8 longitudinally within the sleeve 10 is limited by means of a cross pin 11 carried by the sleeve 10 and engaging in an elongated recess or slot pro vided in one side of the rod 8. i

The head plate 5 is formed with an upward extension provided in its inner side with a keeper socket 13 and provided 011 its inner face at opposite sides of the socket 13 with keeper lugs 14. Pivoted at one end as at 15 to an upward extension on the head plate 6 is a shackle 16 whose other end portion is Figure 3 is a view similar to Figure 2 with reduced at its outer side to form a tongue 17 adapted to slide and fit in the space between the lugs 14 as will later become apparent. Byreducing the free end of the shackle 16 a shoulder is formed as at 18 to rest upon the upper end of the extension of head plate 5 and the upper edges of the lugs 14-, and projecting outwardly from the tongue 17 a rigid stud or pin 19 adapted to enter the socket 123 when the tongue 17 is disposed between the lugs 14, whereby the shackle will be held in closed position. Thus, by swinging the shackle to closed position and then sliding the head 5 and rod 8 toward the head plate 6, the tongue 17 will pass into the space between the lugs 14 and the stud 19 will enter the socket 13. Obviously, a

reversal of this operation is necessary for release of the shackle.

The sleeve 10 is provided with a longitudinal slotQO that extends from one end adjacent the head plate 6 through the other end of said sleeve 1.0 as shown clearly in Figure 9, and rigid with and projecting lat orally from the rod 8 at uniform intervals and in longitudinal alinement are a series of pins or projections 21 that extend outwardly through and are movable longitudinally in the slot 20. A series of flanged collars 22 are journaled upon the sleeve 10 in side by side contiguous relation, and these collars are held against endwise displacement oil of the open end of the sleeve 10 by providing the latter at its open end with an external annular flange 23 with which the adjacent end flanged collar 22 abuts. he collars 22 are provided with internal radial grooves 21 of a sizeto permit the free passage of the pins 21, one groove being provided in each collar 22 as shown in Figures 6 to 8 inclusive. ltwill thus be seen that the collars 22 may be readily slid onto sleeve 10 to occupy the full length of the latter before the head plate 6 riveted to the sleeve 10 as described above. It will also be seen that when the collars are placed upon the sleeve 10 and the head plate 6 is riveted to the sleeve 10 said collars will be held effectively in place on the sleeve between the flange QEland the head. plate 6. The annular peripheral flanges of the collars E22 define annular chambers 96 between the same and the sleeve 10 as seen in Figure 6 and the pins 21 are so disposed as to be positioned within these chambers when the head plate 5 is moved inwardly with the rod 8 to'locking position as shown in Figures 2 and'6. Thus, by rotating any one or more of the collars 22 on the sleeve 10 soas to bring the groove or grooves. 24 thereof out of alinement with the associated pins 21, outward movement of the rod 8 will be prevented so that corresponding movement of the head plate cannot be had and the shackle 16 is thereby effectively locked in closed position with the tongue 17 disposed bet-ween the lugs 14 andthe pin 19 engaged in the keeper socket 13. Conversely, when allot the collars 22 are set with their grooves 24 alined with each other andwith the pins 21, the rod 8 and head plate 5 may be moved outwardly relative to the sleeve and head plate 6, thereby releasing the head plate 5 from the shackle 16 and permitting the latter to swing to open position as shown in Figure 3. 7

Each collar 22 is provided with an external radial stud 27, and slidably fitted on each collar 22 is a dialring 28 having a circular series of internal grooves 29 and a circular series of peripheral indications or numerals 30, each numeral '30 being radially alined with one'groove 29 of the dial ring. The. dial rings 28 are adapted to be selectively arranged to receive the studs 27 of the associated collars 22 in any desired ones of the grooves, 29 thereof, and by this means any desired combination can be eiiccted as is well known in the art. Naturally, the dial rings 28are disposed upon the collar 22 before the head plate 6 is applied to the end stem of the sleeve 10.

The dial rings 28 are preferably provided at corresponding ends with external circumferential knurled ribs 31 to facilitate rota tion thereof, whereby turning of the collars 22 is effected.

In view of the above it will be seen that by noting the initial assembling relation between certain numbers'or indications 30 of the dial. rings 28 and marks provided upon the head plates 5 and 6, the proper rotarially adjusted positions for the rings,

28 canbe noted, whereby the collars 22 may be set with their grooves 24 alined with each other and with the pins 21 for permitting outward movement ofthe rod 8 and head arranged as in Figure 2 the head plate 5 may be moved outwardly to the position of Figure' 3 for releasing the shackle. On the other hand, byclosing the shackle and moving the rod 8 and head 5 inwardly the pins 21 will be brought within the annular chambers 26 so that the collars 22 may be rotated by actuation of the rings 28, thereby moving the groove or grooves 24 of one or more of the collars 22 out of alincment with the associated pins 21 and preventing outward release movement of the head plate 5. Naturally, one unfamiliar with the combination necessary to register the grooves 24 and pins 21 will have considerable difliculty in releasing the shackie, although the same may be readily effected by one familiar with this combination.

It will be seen that the construction is extremely simple and durable, the same embodying a minimum number of parts which may be manufactured and assembled at a relatively low cost.

From the foregoing description it is believed that the construction and operation as well as the advantages of the present invention will be readily understood and appreciated by those skilled in the art.

Minor changes may be made without departing from the spirit and scope of the invention as claimed.

lVhat I claim as new is In a poi-imitation padlock, a head plate having an opening, a longitudinally slotted sleeve having a. reduced stem at one end rigidly secured in said opening of the head plate, a. shackle pivoted to said head plate, a second hcad plate having an opening, a rod having limited longitudinal sliding movement in said sleeve and provided on one end with a reduced threaded stem sccurcd in the opening of said second head plate, cooperating means on the second head plate and the shackle for rclcasably holding the latter in closed position when said rod and the second head plate are moved inwardly relative to the sleeve and first nanied head plate, means including, pins on said rod projecting through the slot of the sleeve, internally grooved flanged collars journalled on said sleeve for releasably locking the rod and second head plate against outward movement, an integral external annular flange on the other end of said sleeve engaged with the second head plate, and with the sleeve slot extending through said end flange, said flanged collars being arranged in side by side contiguous relation between the first named head and said sleeve flange with the end collars respectively abutting the. inner sides ol, said first named head and said sleeve flange, and the end collar adjacent the sleeve flange being facially recessed to receive the flange.

In testimony whereof I allix my signature.

JOSEPH COIRO. 

